Crime Scene Management
What this domain tests
Scene management tests first-responder preservation, command structure, perimeter control, search organization, and transfer of the scene from patrol to investigators.
Core rules and concepts
- First responder: protect life, secure the scene, detain witnesses, and avoid unnecessary movement; start a scene log at the perimeter.
- Define inner and outer perimeters; the inner scene is for essential personnel only.
- Establish command and a single entry point; brief everyone on hazards and boundaries.
- Conduct an initial walkthrough for strategy, then choose a search pattern: line or strip, grid, zone, spiral, or ray.
- Control access with a log recording name, agency, time in, time out, and purpose.
Worked example
Patrol finds a residential burglary with a possible blood smear on a door. They evacuate the resident, tape the door and driveway, start a log, and call a supervisor and detective. Reasoning: the blood may be biological evidence; the resident and officers could destroy it; the perimeter keeps the scene stable until a search plan exists.
Traps
Allowing family or media inside; using a perimeter that is too small; letting responders wander; moving furniture before photographs; failing to log entry; assigning a search pattern without briefing.